I have seen him/that about 5 times or something, It always get's me entertained when seeing it. There are probably some screenshots of mine floating around somewhere but you get the idea _________________

I've never seen one, even though I've played that game more than anything else.

This creature appears out of nowhere, so you have to be lucky to see him/it.
I remember when I saw him for the first time. I drove very fast in Hoboken (near Pete's shop), then I suddenly noticed a strange shape of the head. I got out of the car and I could not believe it

I remember this creature, but just like the others I never saw him. I'm pretty sure that it was created just for fun as an Easter egg.
Now I wonder how many times I haven't noticed him since I've started playing Mafia I.